中国激光, 2018, 45 (11): 1110005, 网络出版: 2018-11-15
低信噪比下相干多普勒激光雷达风场矢量反演算法 下载: 899次
Wind-Field Vector Retrieval Method at Low Signal-to-Noise Ratio for Coherent Doppler Lidar
图 & 表
图 2. 不同信噪比下基于模拟数据的两种算法对比。(a) RSN=-10 dB,DSWF;(b) RSN=-10 dB,FSWF;(c) RSN=-20 dB,DSWF;(d) RSN=-20 dB,FSWF
Fig. 2. Comparison of two algorithms at different RSN based on simulated data.(a) RSN=-10 dB, DSWF; (b) RSN=-10 dB, FSWF; (c) RSN=-20 dB, DSWF; (d) RSN=-20 dB, FSWF
图 3. 不同信噪比下基于模拟数据的两种算法风场反演误差对比。 (a)风速;(b)风向
Fig. 3. Comparison of wind-field estimated retrieval errors between the two algorithms based on simulated data at different RSN. (a) Wind velocity; (b) wind direction
图 4. 不同信噪比下基于模拟数据的SQP和拟牛顿法风场数据反演对比。(a)采用SQP法的风场反演;(b)采用拟牛顿法的风场反演;(c)原始风场反演
Fig. 4. Comparison of wind-field estimated retrieval errors between SQP and quasi-Newton methods based on simulated data at different RSN. (a) Retrieval data with SQP; (b) retrieval data with quasi-Newton method; (c) retrieval data of original wind-filed
图 5. 便携式相干测风激光雷达和探空气球实物图。(a)便携式相干测风激光雷达;(b)探空气球
Fig. 5. Physical photos of the portable coherent Doppler lidar and sounding balloon. (a) Portable coherent Doppler lidar; (b) sounding balloon
图 6. 2018年3月20日相干多普勒激光雷达与探空气球对比。(a)水平风速;(b)水平风向;(c)信噪比
Fig. 6. Comparison of coherent Doppler lidar and sounding balloon on March 20, 2018. (a) Horizontal wind speed; (b) horizontal wind direction; (c) RSN
图 7. 2018年3月21日相干多普勒激光雷达与探空气球对比。(a)水平风速;(b)水平风向;(c)信噪比
Fig. 7. Comparison of coherent Doppler lidar and sounding balloon on March 21, 2018.(a) Horizontal wind speed; (b) horizontal wind direction; (c) RSN
图 8. 2018年3月22日相干多普勒激光雷达与探空气球对比。(a)水平风速;(b)水平风向;(c)信噪比
Fig. 8. Comparison of coherent Doppler lidar and sounding balloon on March 22, 2018. (a) Horizontal wind speed; (b) horizontal wind direction; (c) RSN
图 9. 2018年3月23日相干多普勒激光雷达与探空气球对比。(a)水平风速;(b)水平风向;(c)信噪比
Fig. 9. Comparison of coherent Doppler lidar and sounding balloon on March 23, 2018.(a) Horizontal wind speed; (b) horizontal wind direction; (c) RSN
图 10. 相干多普勒激光雷达和探空气球散点图对比。(a)水平风向;(b)水平风速
Fig. 10. Comparison of the scatterplot of coherent Doppler lidar and sounding balloon.(a) Horizontal wind speed; (b) horizontal wind direction
图 11. 采用拟牛顿法的FSWF矢量风速反演时空图
Fig. 11. Spatiotemporal figures of wind vector retrieval with FSWF using quasi-Newton method
表 1相干测风多普勒激光雷达系统参数指标
Table1. Parameters of the coherent wind-detected Doppler lidar system
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赵萌, 郭磐, 芮训豹, 陈思颖, 张寅超, 陈和. 低信噪比下相干多普勒激光雷达风场矢量反演算法[J]. 中国激光, 2018, 45(11): 1110005. Zhao Meng, Guo Pan, Rui Xunbao, Chen Siying, Zhang Yinchao, Chen He. Wind-Field Vector Retrieval Method at Low Signal-to-Noise Ratio for Coherent Doppler Lidar[J]. Chinese Journal of Lasers, 2018, 45(11): 1110005.